The Weighted column is a type of calculated column that generates a grade based on the result of selected columns and categories, and their respective percentages. When creating a Weighted column, you can include other calculated columns or other Weighted columns.
If there isn’t a “weighted total” column in the grade center already you can create one through the “Create Calculated Column” option. Once you have the weighted column, you can then manage the weights for the categories there. Item 3 for this column type allows you to select categories that you can then weight. Push the category to the right and then add the percentage.
For more information or specific details, please refer to the Blackboard documentation on Creating and Managing Grade Center Columns. Refer to the sections “About Weighted Columns in the Grade Center” and “How to Create Weighted Columns in the Grade Center.”